modulation envelope

См. также в других словарях:

• Envelope modulation — On a subtractive synthesizer, envelope modulation is the amount that a modulation envelope effects a certain parameter (filter cutoff, oscillator pitch etc.)Most synthesizers include an ADSR envelope, meaning:* Attack * Decay * Sustain *… …   Wikipedia

• Envelope (disambiguation) — An envelope is the paper container used to hold a letter being sent by post.Envelope may also refer to:In science: * Envelope (mathematics), a curve, surface, or higher dimensional object defined as being tangent to a given family of lines or… …   Wikipedia

• Peak envelope power — is the average power supplied to the antenna transmission line by a transmitter during one radio frequency cycle at the crest of the modulation envelope, under normal operating conditions. PEP was often used in non broadcast amplitude modulation… …   Wikipedia

• Continuous phase modulation — Passband modulation v · d · e Analog modulation AM · …   Wikipedia

• Amplitude modulation — Passband modulation v · d · e Analog modulation AM · …   Wikipedia

• Intensity modulation — In optical communications, intensity modulation (IM) is a form of modulation in which the optical power output of a source is varied in accordance with some characteristic of the modulating signal. In intensity modulation, there are no discrete… …   Wikipedia

• Single-sideband modulation — (SSB) is a refinement of amplitude modulation that more efficiently uses electrical power and bandwidth. It is closely related to vestigial sideband modulation (VSB) (see below).Amplitude modulation produces a modulated output signal that has… …   Wikipedia

• Pulse-width modulation — (PWM) of a signal or power source involves the modulation of its duty cycle, to either convey information over a communications channel or control the amount of power sent to a load. PrinciplePulse width modulation uses a square wave whose pulse… …   Wikipedia

• Polar modulation — is analogous to quadrature modulation in the same way that polar coordinates are analogous to Cartesian coordinates. Quadrature modulation makes use of Cartesian coordinates, x and y . When considering quadrature modulation, the x axis is called… …   Wikipedia

• Slowly varying envelope approximation — In physics, the slowly varying envelope approximation (SVEA) is the assumption that the envelope of a forward travelling wave pulse varies slowly in time and space compared to a period or wavelength. This requires the spectrum of the signal to be …   Wikipedia

• Self-phase modulation — (SPM) is a nonlinear optical effect of light matter interaction.An ultrashort pulse of light, when travelling in a medium, will induce a varying refractive index of the medium due to the optical Kerr effect. This variation in refractive index… …   Wikipedia